http://www.uic.edu/classes/bios/bios...mrespsys_1.gif

that picture alone proves that theres not difference between a mouth or nose hit. it doesnt go "straight to your head" it takes a longer route to your lungs

it burns your nose because you scorch the hairs inside of your nose. your nose has more hairs than your lungs which is why its harsh. it kills your ability to smell after awhile, but a hit now and then wont do much. again, dont see the point.